Are you currently using Twitter? If not you need to be. Twitter is an amazing platform to build relationships, drive traffic and sales.
But, the best part about twitter is the relationships. You can easily build relationships that can be very valuable.
It is unfortunate, but I think most people are not using twitter because they quite do not understand it. I was the same way. I learned of twitter almost 2 years ago. But, I never used it because I did not understand it....